Connecting structure-contained connection device of electric tool for connection with angle adjuster

ABSTRACT

The present utility model discloses a connecting structure-containing connection device of an electric tool for connection with an angle adjuster, comprising a tooth-shaped jacket, a locking body, a plurality of steel balls, a spring, and a spring base, characterized in that the tooth-shaped jacket is internally equipped with the locking body; a plurality of spherical grooves are emplaced around the circumference of the neck of the locking body and steel balls are contained in the spherical grooves; the radial positioning between the locking body and the tooth-shaped jacket is realized through the steel balls; an annular groove is present at the rear end of the locking body and the annular groove is internally equipped with a snap spring; the rear end of the locking body is equipped with a spring base, the axial positioning between the spring base and the locking body is realized through the snap spring, and the spring base is connected to one end of the spring and the other end of the spring presses against the inside of the tooth-shaped jacket. The present utility model integrates the axial restraint and rotation of the angle adjuster into a body, which effectively simplifies the operation of the connection device and eliminates various inconveniences during the connection and rotation of the angle adjuster.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a continuation-in-part of, and claims priority under 35 U.S.C. §120 to, co-pending, commonly owned, U.S. patent application Ser. No, 14/576,750 entitled “CONNECTING STRUCTURE-CONTAINED CONNECTION DEVICE OF ELECTRICAL TOOL FOR CONNECTION WITH ANGLE ADJUSTER” which was filed in the United States on Dec. 19, 2014 and which in turn claimed priority under 35 U.S.C. §119 to co-pending, commonly owned, Chinese application Serial No. 201320842019,1 entitled “CONNECTING STRUCTURE-CONTAINED CONNECTION DEVICE OF ELECTRICAL TOOL FOR CONNECTION WITH ANGLE ADJUSTER” which was filed in China on Dec. 19, 2013, now Chinese Utility Model No CN 203665475 U.

INCORPORATION BY REFERENCE

Above-referenced U.S. patent application Ser. No. 14/576,750 and Chinese application Serial No. 201320842019,1, both entitled “CONNECTING STRUCTURE-CONTAINED CONNECTION DEVICE OF ELECTRICAL TOOL FOR CONNECTION WITH ANGLE ADJUSTER”, are both hereby expressly incorporated by reference herein in their entireties to form a part of the present disclosure.

TECHNICAL FIELD

The present utility model relates to an accessory of an electric tool, and more particular to a connecting structure-containing connection device of an electric tool for connection with an angle adjuster.

PRIOR ART

The connection device connecting an angle adjuster in an existing electric tool mostly comprises an axial fixture and a connection bushing. The axial restraint and the angle of rotation of the angle adjuster are realized through the axial fixture and the connection bushing. To use the electric tool, it is necessary to position the connection bushing at a right angle in order to snap it into place. In addition, considerable effort is needed to turn the angle adjuster. As a result, the combined use of the axial fixture and the connection bushing makes it hard to use the angle adjuster and the entire operation requires more time and effort to complete.

DISCLOSURE OF THE UTILITY MODEL

The technical problem to be solved by the present utility model is to provide a connecting structure-containing connection device of an electric tool for connection with an angle adjuster so that the operation of the angle adjuster on the electric tool will be more efficient and convenient.

To solve the foregoing technical problem, the technical solution adopted for the connecting structure-containing connection device of an electric tool for connection with an angle adjuster in the present utility model is as follows:

A connecting structure-containing connection device of an electric tool for connection with an angle adjuster comprises a tooth-shaped jacket, a locking body, a plurality of steel balls, a spring, and a spring base, characterized in that the locking body is set inside the tooth-shaped jacket; a plurality of spherical grooves are provided on the circumference of the neck of the locking body and steel balls are contained in the spherical grooves; the radial positioning between the locking body and the tooth-shaped jacket is realized through the steel balls; an annular groove is provided at the rear end of the locking body and the annular groove has a snap spring in it; the rear end of the locking body is equipped with a spring base, the axial positioning between the spring base and the locking body is realized through the snap spring, and the spring base is connected to one end of the spring and the other end of the spring presses against the inside of the tooth-shaped jacket.

The front end of said tooth-shaped jacket has a tooth profile and the tooth profile of the tooth-shaped jacket mates with the tooth profile set on the electric tool.

The rear end of said locking body mates with the input shaft assembly in the front of the angle adjuster.

The present utility model can achieve the following effects:

The present utility model integrates the axial restraint and rotation of the angle adjuster into a body, which effectively simplifies the operation of the connection device without the inconveniences associated with the connection and rotation of the angle adjuster.

The present utility model realizes quick, stepless connection between the electric tool and the angle adjuster and enables the angle adjuster to rotate freely.

The present utility model not only saves materials and reduces the space used, but also makes the operation of the angle adjuster on the electric tool more efficient and convenient.

BRIEF DESCRIPTION OF THE DRAWINGS

The following further describes the present utility model in conjunction with the drawings and a particular embodiment.

FIG. 1 is an elevation view of the connecting structure-containing connection device of an electric tool for connection with an angle adjuster.

FIG. 2 is a cut-away view of the present utility model,

FIG. 3 is a schematic diagram of the locking body of the present utility model.

FIG. 4 is a schematic diagram of the connection between the present utility model and an angle adjuster.

FIG. 5 is a schematic diagram of the connection between the present utility model connected with an angle adjuster and an electric tool.

DESCRIPTION OF REFERENCE NUMBERS IN THE DRAWINGS

 1—Tooth-shaped jacket  2—Locking body  3—Steel ball  4—Spring  5—Spring base  6—Snap spring 21—Spherical groove 22—Annular groove

DETAILED DESCRIPTION OF THE UTILITY MODEL

As shown in FIG. 1 and FIG. 2, the connecting structure-containing connection device of an electric tool for connection with an angle adjuster in the present utility model comprises a tooth-shaped jacket (1), a locking body (2), three steel balls (3), a spring (4), and a spring base (5).

The front end of said tooth-shaped jacket (1) has a tooth profile, the tooth profile of the tooth-shaped jacket (1) mates with the tooth profile provided on the electric tool, and the tooth-shaped jacket (1) is internally equipped with the locking body (2).

As shown in FIG. 3, three spherical grooves (21) are emplaced around the circumference of the neck of the locking body (2), steel balls (3) are contained in the annular groove (21), the radial positioning between the locking body (2) and the tooth-shaped jacket (1) is realized through steel balls (3).

An annular groove (22) is equipped at the rear end of the locking body (2) and the annular groove (22) is internally equipped with a snap spring (6).

The rear end of the locking body (2) is equipped with a spring base (5), the axial positioning between the spring base (5) and the locking body (2) is realized through the snap spring (6), and the spring base (5) is connected to one end of the spring (4) and the other end of the spring (4) presses against the inside of the tooth-shaped jacket (1).

When the present utility model is used, the rear end of the locking body (2) is connected to the input shaft assembly in the front of the angle adjuster and the tooth profile at the front of the tooth-shaped jacket (1) is connected to the electric tool.

The work mechanism of the present utility model is as follows:

As shown in FIG. 4 and FIG. 5, the spring (4) on the spring base (5) first pushes the steel balls (3) that are set on the locking body (2), and the steel balls (3) in turn push the locking body (2) and the angle adjuster so that they snap to fit into each other to achieve axial restraint; then a quick connection with the electric tool is realized through the tooth-shaped jacket (1), and thus the axial restraint connection between the electric tool and the angle adjuster is realized.

The spring (4) can realize free rotation of the angle adjuster, making it easier to rotate the angle adjuster. The angle of rotation of the angle adjuster can be controlled through the quantity of inner teeth on the tooth-shaped jacket (1) and the angle between the teeth. The smaller the angle between the teeth, the finer the adjustment of the angle of rotation.

The present utility model realizes stepless connection through the tooth profile on the tooth-shaped jacket and the corresponding tooth profile on the electric tool, without the necessity of positioning and fitting the connection bushing at a correct angle; the quantity of teeth can be determined as required, the larger the quantity of teeth, the smaller the angle of rotation and the larger the rotation scope of the angle adjuster, and the densely distributed tooth profiles can make the rotation of the angle adjuster more convenient; in addition, the internal locking body can conveniently and quickly snap onto the electric tool to complete axial restraint through squeezing of the spring on the steel balls.

Making the connection and rotation of the angle adjuster simpler and more practical, the present utility model is suitable for mass production and can widely be applied to various electric tools. 

1. A connecting structure-containing connection device of electric tool for connection with an angle adjuster, comprising a tooth-shaped jacket, a locking body, locking body, a plurality of steel balls, a spring, and a base characterized in that the tooth-shaped jacket is internally equipped with a locking body; a plurality of spherical grooves are emplaced around the circumference of the neck of the locking body and steel balls are contained in the; the radial positioning between the locking body and the tooth-shaped jacket is realized through steel balls; an annular groove is present at the rear end of the locking body and the annular groove is internally equipped with a snap spring; the rear end of the locking body is equipped with a spring base, the axial positioning between the spring base and the locking body is realized through the snap spring, and the spring base is connected to one end of the spring and the other end of the spring presses against the inside of the tooth-shaped jacket.
 2. The connecting structure-containing connection device of electric tool for connection with an angle adjuster according to claim 1, characterized in that the front end of said tooth-shaped jacket is a tooth profile and the tooth profile of the tooth-shaped jacket mates with the tooth profile on the electric tool.
 3. The connecting structure-containing connection device of an electric tool for connection with an angle adjuster according to claim 1, characterized in that the rear end of said locking body mates with the input shaft assembly at the front of the angle adjuster.
 4. A connecting structure-containing connection device of an electric tool for connection with an angle adjuster, comprising a tooth-shaped jacket, characterized in that the tooth-shaped jacket is internally equipped with a locking body, steel balls, a spring, and a spring base; the locking body is connected to the spring base through the spring; and when the spring on the spring base is pushed to extend to extrude the steel balls, the axial restraint of the angle adjuster can be quickly and conveniently realized through the connection device.
 5. The connecting structure-containing connection device of an electric tool for connection with an angle adjuster according to claim 4, characterized in that the connection device realizes stepless connection through engagement between the tooth profiles on the tooth-shaped jacket and those on the electric tool; the quantity of teeth can be determined as required; the more the teeth there are, the smaller the rotation angle required, and the wider is the rotation scope of the angle adjuster.
 6. The connecting structure-containing connection device of an electric tool for connection with an angle adjuster according to claim 4, characterized in that the axial restraint and the rotation of the angle adjuster are integrated into a body. 